DIN EN 13880-13-2003 specifies the test method for the expansion rate and adhesion of hot sealants under conditions of discontinuous expansion. This standard is applicable to evaluate the performance of hot sealants during expansion, including measurement of expansion rate and adhesion between material and substrate. The test method verifies the Reliability and Stability of sealants under dynamic conditions by simulating the effect of temperature changes on their performance in actual use. The standard provides a scientific basis for the production, quality control and application of hot sealants. It is widely used in the fields of roads, bridges and building joints to ensure the durability and adhesion performance of sealants in real environments and meet engineering needs.